Waffle iron



H. KRUESHELD.

WAFFLE IRON.

APPLICATION FILED' IuLY I5, 1920.

jlm., rammed Dec. 12,192.2.

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f i-'IT-TORNE Patented ec. l2, i922.

HENRY KRUESHEJLD, OF MANSFIELD, OHIO, ASSIGNOR T O WESTINGHOUSE ELECTRICPRODUCTS COMPANY, A CORPORATION OlF MICHIGAN.

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Application lled July 15, 1920. Serial No. 396,574.

ToA all whom t may concern:

Be it known that l, HENRY KRUESHELD, a citizen of the United- States,and a resident of Mansfield, in the county of Richland and State ofOhio, have invented a new and useful improvement in Waffle `irons, ofwhich the followingisa specification. A'

My invention relates to electrically-heated apparatusY and particularlyto electricallyheated cooking apparatus and it has, for one of itsobjects, to provide electric heating means for a walile iron.

Another object-is to provide a terminal device for anelectrically-heated waffle iron which shall be relatively simple andinexpensive and which shall permit an electric current to traverse theheating elements under all conditions of operation of the waiiie iron.

More specifically, my invention embodies relatively thin heatingelements substantially coextensive with the waile iron and secured tothe outer Surface of each halt1 thereof. rlerminal members for theheating elements are embedded in a 'radiallyextend ing insulating memberlocated adjacent to the pivot lugs, the terminal members being solocated as to'permit of the heating elements on each half of the waffleiron being electrically connected to each other and to the supplycircuit.

Referring to the single sheet of drawings,

Figure 1 is a top plan view, with certain parts cut away, of a heatingapparatus embodying my invention;

Fig. 2 is a view, partly in side elevation and partly in verticalsection, of the device shown in Fig. l, and 4 Fig. 3 is adiagrammatic'view of the circuits and of the terminal members used inthe device embodying my invention.

A support 1 comprises an annular member 2 provided with a plurality oflegs 3, an up-standing member 4 and a tcrminal` supporting casing 5, thesupport 4; and the casing 5 being located at diametrically oppositeplaces on the annular member 2. The waie iron comprises two co-operatingmetal baking surfaces 6 and 7 of usual form, here shown as substantiallycircular in contour, and provided with integral pivot lugs 8 and 9,respectively. The pivot lugs 8 and 9 extend radially outward from theperiphery of the respective members 6 and 7 and are arranged toco-operate with each other in holding the members -6 and 7 in properrelative positions.

At a point diametrically opposite to the pivot lugs 8 and 9, integralhandle lugs 10 and 11 are provided on the members 6 and 7, and suitablehandle members 12 and 13 are located therein to permit the baking surfaces 6 and 7 to be handled during the operation of baking.

Heating elements 14' and 15 are located on the outer surfaces of themembers 6 and 7 and may be of any well-known construction, and, as hereshown, comprise relatively thin heating elements which are substantiallycoextensive with the members 6 and 7 and are secured thereto by means ofa pluralityof screws 16, to insure close operative engagement 'of theheating element with the members 6 and 7. I have shown the usualconstruction of heating element in order to indicate how such a heatermay be applied but,`as such heating elements are old in the art, it isbelieved that detailed description thereof is not necessary.

Substantially cylindrical coaxial openingsI 17 are provided in the pivotlugs 8 and 9 in which is placed a tubular insulating mem ber 18 for apurpose to be hereinafter set forth. insulating members 19 and A2O, sub.stantially coextensive with the pivot lugs 8 and 9 and extendingperiphera-lly around the members 6 and 7 for a`relatively shortdistance, are provided and each member has a plurality ofcurrent-conducting members 21 and 22 embedded therein. n

The members 19 and 20 may be suitably secured to the members 6 and 7, asby screws 23, and to the pivot lugs 8 and '9 by similar screws (notshown). The inner ends of the conducting members 21 and 22,'areconnected to the heating elements 24 and 25 in any well known mannen Inorder to connect the conducting member 22 in the lower heating elementto the conducting member 22 comprising one of the terminals of the upperheating element, the outer end of one of the conducting members 22,connected to the lower heating element 15, is electrically 'connected toa tubular member 26 which is located in the tubular insulatingmember'18. The outer end of the conducting strip 22, connected to theupper heater element 14:,.is suitably secured to a short metal rod 27which vits into the tubular member 26, thus providing acurrent Milt)lll@ path from the terminal of one heating ele: ment to the terminal ofthe other heating element.

A short metal rod or stud 28 is suitably secured to the outer end ofeach of the conducting strips 2l and extends a relatively short distancebeyond the outer surface of the insulating members 19 and 20.

A substantially rectangular block 29 of insulating materialis located atthe bottom of the casing 5 and has bent conductlng metal strips 30 and3l embedded therein, the outer ends of which are so located and formedas to co-operate with a terminal socket 32 for connection to a suitablesource of current. The inner ends of the members 30 and 3l are bentsubstantially at right angles to the main part thereof, in a verticalposition, to form resilient contact terminals and are severally providedwith an indentation in which the outer ends of the terminal members28may be placed, the location of this indentation being such that t-hepivot lugs 8 and 9 and the insulatingv members 19 and 2O rest upon themember 29. A cover member (not shown) may be provided for the top of thecasing member '5 in order to give a finished appearance to the casing.The members 26, 27 and 28, being coaxial, the upper baking surface 6 maybe angularly displaced with regard to the lowermember 7 withoutinterrupting the current flow through the heating elements. :The twobaking surfaces 6 and 7 may be easily' and quickly removed, as a unit,from the support l by lifting them therefrom.

It may be noted that I provide currentconducting means which will permitof energizing the two heating elements at al] times during the operationof the device whether the waffle-baking surfaces are in operativeposition or are separated to permit of insertion of fresh material orthe removal of the baked material, and that these connecting means arerelatively simple and easily applied. i

Various changes may be made in the device without departing from thespirit and scope of my invention, and I desire that only suchlimitations shall be placed thereon as are imposed by the prior art orare specifically set forth in the appended claims.

I claim as my invention:

l. In an electrically-heated apparatus, the combination with twoco-operating baking surfaces, of' heating means associated with eachbaking surface, and a hinge member for holding said baking surfaces inrelative longitudinal alinement and for conducting current from oneheating means to the other.

2.' In an electrically-heated apparatus, the combination with a lowerbaking surface, an upper baking surface and -lelectric heating meansassociated with each; of said baking surfaces, of a hinge memberpermitting said 'baking surfaces to have different angular positionsrelative to each other and electrically connecting said heating means.

3. An electrically-heated waHle iron comprising two superposedco-operating baklng surfaces, a heating means secured to each of saidbaking surfaces and interfitting terminal members for said heating meanspermitting the angular adjustment of one of said surfaces relative tothe other while continuing the supply of energy to said heatingelements.

4. In an electrically-heated apparatus, the combination with asupporting member and contact members mounted thereon, of two superposedcooperatin ;v baking surfaces, ahea-ting element secured to each of saidbaking surfaces,4 and intertting terminal members for said heatingelements operatively engaging said contact members permitting saidheating elements being energized while permitting said bakin 'surfacesto have angular movement re ative to said supporting member.

5. In an electrically-heated apparatus, the combination with' asupporting member and contact members mounted thereon, of two superposedeo-operating baking surfaces, a heating element secured to each of saidbaking surfaces and substantially coeXtensive therewith, and terminal4members for said heating elements permitting Vsaid baking surfaces tohave angular movement relative to said supporting member and 'rela tlveto each other while the heating elements 100 are being continuouslyenergized.

6. In an electrically-heated apparatus, the combination with asupporting member and contact members mounted thereon, of twoco-operating baking surfaces, a heating ele- 105 ment secured to theouter surface of each of said baking surfaces and terminal members forsaid heating elements operatively engaging each other and said contactmembers and permitting the angular adjustment of 110 one of'said bakingsurfaces relative to the other and angular movement of both surfacestogether relative to said supporting member while the heating elementsare continuously energized.

7. 'In an electrically-heated appara-tus, the

combination with two copper-ating baking resilient contact membersmounted thereon, of two izo-operating baking-surface members, aradially-extending pivot lug on-eaeh of said members, insulator memberssubstantially eoextensive with said ivot lugs and adjacent thereto, aheating eiement secured to the outer surface ofeaeh of saidbaking-surface members, and terminal members embedded in said insulatormembers 10 operatively engaging each other and said resilient contactmembers and permitting the angular adjustment of one of saidbaking-surface members relative to the other and angular movement of'both members together relative to said supporting member.

In testimony WhereoL, I have hereunto subscribed my name this' 23 day ofJune 1920.

HENRY KRUESHELD.

